Slow-closing valve.



Patented Dec. 3G, |902.

- A. F. BLEscH.

SLUW C LUSING VALVE.

'Appiction Med Fab. l, 1902.)

UNITED STATES FETCE.

PATENT AUGUST Fr BLESCH, OF DETROIT, MICHIGAN, ASSIGNOR TO STANDARD SANITARY MANUFACTURING COMPANY, OF PITTSBURG, PENNSYL- VANIA, A CORPORATION OF NEVIr JERSEY.

'SLOW-CLOSING VALVE.

SPECIFICATION forming part of Letters 'Patent No. 716,856, dated December 30, 1902.

Application filed February l. 1902. Serial No. 92.098. (No modela` To if/ZZ whom it nca/y concern:

Be it known that I, AUGUST F.' BLnscH, a citizen oftheUnitedStates,residingatDetroit, in the county of Vayne and State of Michigan,

have invented certain new and useful Improvements in Slow-Closing Valves, of which the following is a specification, reference being had therein to the accompanying drawings.

Io The invention relates to new and useful improvements in slow-closing valves', especially intended for liushing water-closets, te., and has for its object the construction of such a valve, which comprises the casing, a valve closed by pressure, a restricted port leading to a chamber above the valve, and a valvecontrolled by-pass from this chamber to the exit-pipe, with means for straining the water which goes through the passage to the rezo stricted port, so that it may be used in sections of the country where the water-supply contains more or less impurities, sediment, &c., without danger of obstruction to the restricted port; also, to the construction of z5 the device, whereby it may be manufactured cheaply and simply and whereby the iiow of water through the casing will tend to keep the screen clean and free from collection of floating particles or sediment, and thus prevent the clogging of the screen.

The invention further consists in the construction, arrangemeut, and combination of the various parts, as more fully hereinafterdescribed.

3 5 In the drawings, Figure l is a vertical central section through my slow-closing valve, and Fig. 2 is a similar section of a slight modiication of the lower end of the tubularextension of the valve.

having the inlet connection B at one end. The other end is capped, as shown, and in the upper cylindrical portion Vthereof is a piston C, having suitable packing to make a tight joint between the piston and the casing, as shown. Above the piston C is a chamber D.

Eis an exit-passage leading laterally from the casing A and having a discharge-nipple F.

G is the valve proper, closing against a seat 5o H, formed at the junction of the inlet and exit A is a tubularcasing, preferably cylindrical,v

passages. The valve G has a tubular eXten sion I extending into the exit-passage, as shown, and having the tapering lower end J. Within this extension is a chamber K. Lead ing from this chamber K is a restricted passage ci, which leads through the stem of the piston-valve to the upper end thereof, where itcornmunicates with the chamberDthrough the restricted port h, formed in the tubular extension c of the plug d, adjustably engaging the upper end of the piston-valve, as shown in the drawings. This plug has suit.- able wings e, by means of which it may be readily turned to adj ust its position, and consequently the size of the port h. In the upper end ot' the plug d is an adjusting-screw h, which determines the amount of throw or travel of the piston-valve, this screw striking the cap L in its upper position.

Leading from the chamber D is a passage 7o M, which communicates, through the valvechamber N, with the exit-passage E. This forms what I call a by-pass betweenv the valve-casing and the exit-pipe and is controlled by a valve O, which may be opened by the cam or toe P on the shaft Q, this shaft having a suitable actuating-handle R extending tothe outside of the casing.

Secured to the lower end of the tubular eX- tension I is a screen S, preferably conical in shape, as shown in Fig. l, and preferably depending below or iiush with the lower end of the tubular extension. In Fig. 2 Ihave shown the screen S as liush with the face of the eX- tension.

The parts being thus constructed,theirop eration is as follows: The operator turning the handle R will lift the valve O, and thus openthe by-pass from the chamber D to the exit-passage E. The pressure of water on the lower end of the piston-valve will lift that valve from its seat, moving the upper end of the tubular extension I clear of the seat H. This movement will of course force out the water in the chamber D into the exit-pipe, 95 and the inlowing water from the inlet-opening will pass directly from the inlet-opening through the passage E to the bowl of the closet. As soon as the operator releases the handle R the valve O will seat, thus closing 10o the ley-pass. The water coming in through the inlet-passage will pass throughfthe screen S into the chamber K, thence through the restricted ports a b into the chamber D, and as the upper end of the piston-valve has a larger surface exposed to the water-pressure than the lower end thereof will gradually force down the piston-valve and close it upon the seat II. The screen S Will prevent any particles carried by the water from entering the chamber K and also will strain out all the coarser sediment, so that there is no danger of clogging the ports a b.

By having the screen S arranged at the lower end of the tubular extension I the water flowing from the inlet to the eXit passage when the valve Gr is open will wash off and cleanse the screen at each operation, so that although the water contains much sediment and floating particles the screen will not clog up in use.

In many parts of the country it has been found impossible to use these slow-closing valves with any satisfaction or certainty, because of the large amount of sediment and other particles that are carried by the water, especially in the times of freshet or other times when the water is impure.

I preferably form a tapering uozzle around the port ain the chamber I, so that there will be no seat around the port upon which any particles which may pass the screen can lodge to obstruct the port, and thus I doubly insure the continued perfect Work of the operation even with the dirtiest water.

What I claim as my invention is- In a slow-closing Valve of the character described, the combination of the casing having an inlet at one end and a lateral discharge therefrom, of the Valve Gr, a piston to Which the valve is secured Working in a cylindrical portion of the casing, the tubular extension I projecting into the inlet-pipe below the seat and having the chamber K within, the screen S across said extension aconical projectiont' in the chamber K, the ports Ct from the apex of said extension leading through the valve to the chamber D and a valve-controlled by-pass leading from the chamber D to the exit-pipe.

In testimony whereof I afliX my signature in presence of two witnesses.

AUGUST F. BLESCH.

Witnesses:

M. B. ODOGHERTY, H. C. SMITH. 

